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Condensed Financial Information (Parent Company Only) - Condensed Statements of Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Condensed Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net Income | $ 21,893 | $ 20,312 | $ 14,639 | $ 11,655 | $ 18,543 | $ 20,537 | $ 16,642 | $ 10,816 | $ 68,499 | $ 66,538 | $ 53,117
Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |
Changes from derivative instruments |  |  |  |  |  |  |  |  | (3,004) | (2,117) | (25)
Other Comprehensive Income (Loss), Net of Tax |  |  |  |  | $ (3,827) |  |  |  | 21,420 | 14,576 | (3,827)
Comprehensive Income |  |  |  |  |  |  |  |  | 89,919 | 81,114 | 49,290
Parent Company |  |  |  |  |  |  |  |  |  |  |
Condensed Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net Income |  |  |  |  |  |  |  |  | 68,499 | 66,538 | 53,117
Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |
Changes from derivative instruments |  |  |  |  |  |  |  |  | (3,004) | (2,117) | (25)
Unrealized appreciation for the period on held to maturity securities, net of taxes |  |  |  |  |  |  |  |  | (46) | (92) | (150)
Unrealized appreciation (depreciation) on available for sale securities, net of taxes |  |  |  |  |  |  |  |  | 27,865 | 16,726 | (4,003)
Less: reclassification adjustment for realized (gains) losses included in net income, net of taxes |  |  |  |  |  |  |  |  | (3,395) | 59 | 351
Other Comprehensive Income (Loss), Net of Tax |  |  |  |  |  |  |  |  | 21,420 | 14,576 | (3,827)
Comprehensive Income |  |  |  |  |  |  |  |  | $ 89,919 | $ 81,114 | $ 49,290

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